Rotary separator.



J. A. McKlNLAY. ROTARY sEPARAoR.

APPLICATION FILED MAR. 29.41913.

Patented Feb. 29, 1916.

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WITNESSES THE coLuMBxA FMljwGRAPH C0.. WASHINGTON, D. c.

J. A. McKlNLAY.

ROTARY SEPARATOR.

APPLICATION FILED MAR. 29, 1913.

l 1 73,67 1 Batented Feb. 29, 1916.

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TINTTEE STATES PATENT EFTEE.

JOHN A. MCKINLAY, OF NEWAYGO, MICHIGAN.

ROTARY SEPARATOR.

Application filed March 29, 1913.

To all whom t may concern.'

Be it known that I, JOHN A. MCKINLAY, a citizen of the United States, and resident ofNewaygo, in the county of Newaygo and State of Michigan, have invented new and useful Improvements in Rotary Separatore, of which the following is a specification'.

My invention is an improvement in dryseparating machines for grain, coffee, salt, seeds,'sand, gravel and other similar materials in which the separation is effected by screens.

As its principal object, this invention contemplates the construction of a separator of the rotating type in which the eiiiciency of the screening process is materially increased by the provision of means for imparting a simultaneous rotary and reciprocal motion to the screens.

This invention has as a further object the arrangement and disposition of the screens in their relation to each other in such manner as to permit each grade of tailings to be independently conducted from each screen into an individual discharge spout.

A still further object resides in the construction of the actuating means for the screen in such manner as to maintain a constant pre-determined ratio between the reciprocatory frequency and peripheral velocity of the screening means.

The above and additional objects are-accomplished by such means as are illustrated in their preferred embodiment in the accompanying drawings, described in the following specification and then more particularly pointed out in the claims which are appended hereto and form a part of this application.

With reference to the drawings, wherein, I have illustrated the preferred embodiment of my invention as it is reduced to practice, and throughout the several views of which, similar reference numerals designate corresponding parts: Figure 1 is a front elevation of the assembled structure showing the screens and discharge spout in section. Fig. 2 is a detail end elevation of the means employed for imparting the reciprocal movement to the screen. Fig. 3 is a top plan view of the same structure. Fig. 4 is a view showing the above structure in one of its operating positions. Figs. 5 and 6 are similar views. Fig. 7 is a sectionron the line 7-7 of Fig. 3. Y l

Specification of Letters Patent.

Patented Feb. 29, 191%.

Serial No. 757,665.

Proceeding now to the description of the drawings, this invention includes three correlated structures; the driving mechanism for rotating the screen, the means for imparting a reciprocal movement tothe screen, the screen themselves and the discharge Structure connected with them. Taking up these three elements in the order named: The driving mechanism includes the drive shaft 1, rotatably mounted on the framework 2 by the journal standards 3. The shaft 1 carries at one end the fly wheel 4C and the drive wheels 5 and 6, the wheel 5 being of larger size than the wheel 6 for a purpose to be hereinafter disclosed. A beveled gear 7 is mounted on the opposite end of the shaft 1 and engages the gear 8 carried on the upper end of the shaft 9, the latter member being liournaled at its lower end in bearing blocks carried in the brace 10 and at its upper end in a bearing bore provided in the frame 2. The drive belt 11 operatively connects the shaft 9 with the shaft 12. This rlatter member is journaled at its upper end in the bearing plate 13 and at its lower end in a similar member carried o-n the support or platform member 14 of the framework 2. The shaft 12 is provided with a head stop 15 and mounted around the shaft therebeneath is a helical spring 16, the lower end of which bears against the member 13. This spring acts to return the shaft 12 to its normal position during the reciprocation ofthe shaft. The means whereby a rotary motion is transmitted to the screen members being clearlyy disclosed, I now proceed to the description ofthe mechanism employed for reciprocating the screen in a vertical plane simultaneously with this rotation.

Reverting now to the reciprocating mechanism: A shaft 17 is employed and carries a plurality of cam members 30 which are keyed to the shaft and are disposed to alternately and sequentially engage the reciprocating arms 31 when the shaft 17 is rotated. Said shaft 17 also has mounted thereon drive wheels or pulleys 21 and 22 over which, as well as the wheels 5 and 6, a drive belt 23 passes. By thus providing the pulleys 5 and 6' and 21 and 22 in step arrangement, by shafting of the belt 23 onto the different steps of the pulleys, the speed of theshaft 17 may be varied. The arms 31 Vare pivotally mounted by means of a loosely mounted rod 32, which is journaled at its ends in the journal boxes 33 fixed to the upper face of the member 14. As above described, the shafts 26 and Q7'are secured at their inner ends to the collar member 25 and are secured to the members 3l in any suitable manner. Ihile I have illustrated the reciprocating arms 31 as being four in number, I do not with to limitmyself in any way by this disclosure for vit will be readily seen that any desirable number of these arms 31 and cams 30 may be employed; the number being regulated only by the number of reciprocations per revolution it may be found desirable to impart to the screen member.

Coming now to the description of the screening apparatus proper: I employ a plurality of screensk of frusto-conical shape and superimpose the screens one over another in the order of the size of the mesh, the screen of finest mesh being lowermost.v For purposes of convenience I have illustrated my invention as including-but two screen meinbers 34 anc 35 and shall describe it as such, butY atV the same time I wish it understood that I do 'not limit myself Vto any specific number of screens which maybe used, for this matter will depend entirely upon the quality and nature of the substance to be screened and upon the number of grades of tailings into which it is desired to separate i the substance.

ythe collar41, this latter member being Vfixed 'on the shaft 12.

rhe hub 39 is centrally perforated and carries an integral socket 42 toreceive the shaft 12.

Vis loosely mounted on the upper edge of the vdischarge pipe 43 which may be'fixedlyA supported in any suitable manner. A second discharge spout 44 which is similar in construction to the discharge spout 43 leads from the screen 35 and partly incases the spout 43, and brace rods 45 'are secured at their upper ends to the ears 46 of the collar ,42, and connected at the other end with the hub plate 39 of the screen 35. rlheY screen 35 is disposed beneath the screen 34 and is provided with a central opening registering with the receiving mouth of the member 44.

. supporting plug 47 is fixed to the lower terminal of the shaft 12 and is disposed with its upper face in rotatable engagement with the lower face of the hub plate 39.

It will be noted that the discharge spouts 44 and 43 are individually communicant Copies of this patent may be obtained for The hub plate y means above described the shaft 12 .is-ro tated. Resultantly the screens 34 and 35 are rotated, the various points in the outer edge of the screen 34 coming consecutively under the conducting pipe 49, thereby effect ing a uniformly distribution of the material over the screen. Simultaneously with vthe rotation of the shaft 12y however', the Shaft 17 is rotated, imparting to the lever arms 31 an upward movement four times during each revolution of the shaft 32 through the medium of the cams 30. The upward motion of the arms 31 and consequently of the collar f 24 will act to reciprocate the screens.

It will thus be seen that the screen memy bers Aof my invention will simultaneously rotate iii a horizontal plane and reciprocate in a vertical plane, thus assuring a thorough screening of the material.

It will ofcourse be understood that the above disclosure and accompanying drawings comprehend only the general and preferred embodiment of the v'construction andY that various minor Vchanges iii details of construction, proportion and arrangement of parts may be made-within the scope Aof thc'appe'nded claims and 'without sacrificing any of the advantages of myinven'tion( f .l/Vhat is claimed is:

1. In combination with a rotatable screen, I

a shaft support therefor, and means to rotate said shaft, of a flangel upon said shaft,

a collar mounted to engage said flange/and support said shaft, a movable support for i said collar, arms vindependently movable and engaging said collar support, a second collar mounted to engage the flange and support the shaft, a movable support for the collar, arms independently movable and engaging said collar-support, and means to alternately and sequentially move said arms.

Vitnesses: A

Louis LARsEN,

JOI-1N J. PETERSON. y

five cents veach, by addressingtheY Commissioner of Patents, Washington, D. C.

JOHN A. MCKINLAY. 

